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Ação da angiotensina II na regulação da dominância folicular em bovinos
(Universidade Federal de Santa Maria, 2010-03-02)
The objectives of the present study was to determine the concentration of angiotensin II (AngII) in follicular fluid, to characterize the expression of renin-angiotensin system (RAS) genes in follicular cells and to verify ...
Caracterização de um novo modelo de maturação de oócito in vitro e participação do mTOR na ovulação em bovinos
(Universidade Federal de Santa Maria, 2016-02-26)
In the first study, we characterized an in vitro culture system able to delaying meiosis resumption of bovine oocytes. Firstly, we demonstrated that the use of an EGFR inhibitor (AG1478; 5μM) in a culture system with ...
Regulação da divergência folicular: sinalização intracelular e hormônio anti-mülleriano
(Universidade Federal de Santa Maria, 2014-12-09)
Follicular development occurs in wave like patterns in monovulatory species and is regulated by a complex interaction of gonadotropins with local intrafollicular regulatory molecules. In the first study, induction of ...
Regulação do sistema peptídeos natriuréticos nas células da granulosa e do cumulus na foliculogênese em bovinos
(Universidade Federal de Santa Maria, 2017-03-10)
This thesis aims to contribute to the knowledge of the regulation and function of the
natriuretic peptide (NP) system during follicular dominance, ovulation, oocyte meiosis
resumption and cumulus cells expansion in cattle. ...
Rotas de sinalização na divergência folicular e luteólise em bovinos
(Universidade Federal de Santa Maria, 2014-09-12)
It is well established that locally produced factors exert pivotal roles during dominant follicle selection, oocyte maturation, ovulation and luteolysis. However, the identification of these factors and pathways involved ...
Peptídeos natriuréticos e angiotensina-(1-7) durante o processo de ovulação em bovinos
(Universidade Federal de Santa Maria, 2015-02-20)
Ovulation is controlled by a complex and dynamic interaction of factors, including endocrine and vasoactive mechanisms, cellular messengers and activating enzymes. It is well established that locally produced factors exert ...